Merge pull request #435 from filipedelimabrito/iss417

[IMPROVEMENT] Prevents keyboard hiding after typing a message.

app/src/main/java/chat/rocket/android/fragment/chatroom/RoomFragment.java

@@ -20,7 +20,6 @@ import android.support.v7.app.AlertDialog;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.view.View;
-import android.view.ViewGroup;
 
 import chat.rocket.core.models.User;
 import java.lang.reflect.Field;
@@ -327,7 +326,7 @@ public class RoomFragment extends AbstractChatRoomFragment implements
   }
 
   private boolean closeSideMenuIfNeeded() {
-    DrawerLayout drawerLayout = (DrawerLayout) rootView.findViewById(R.id.drawer_layout);
+    DrawerLayout drawerLayout = rootView.findViewById(R.id.drawer_layout);
     if (drawerLayout != null && drawerLayout.isDrawerOpen(GravityCompat.END)) {
       drawerLayout.closeDrawer(GravityCompat.END);
       return true;
@@ -336,12 +335,12 @@ public class RoomFragment extends AbstractChatRoomFragment implements
   }
 
   private void setupMessageComposer() {
-    final MessageFormLayout messageFormLayout = (MessageFormLayout) rootView.findViewById(R.id.messageComposer);
+    final MessageFormLayout messageFormLayout = rootView.findViewById(R.id.messageComposer);
     messageFormManager = new MessageFormManager(messageFormLayout, this::showExtraActionSelectionDialog);
     messageFormManager.setSendMessageCallback(this::sendMessage);
     messageFormLayout.setEditTextCommitContentListener(this::onCommitContent);
 
-    autocompleteManager = new AutocompleteManager((ViewGroup) rootView.findViewById(R.id.messageListRelativeLayout));
+    autocompleteManager = new AutocompleteManager(rootView.findViewById(R.id.messageListRelativeLayout));
 
     autocompleteManager.registerSource(
         new ChannelSource(

app/src/main/java/chat/rocket/android/layouthelper/chatroom/MessageFormManager.java

@@ -3,14 +3,13 @@ package chat.rocket.android.layouthelper.chatroom;
 import chat.rocket.android.widget.message.MessageFormLayout;
 
 /**
- * handling MessageForm.
+ * Handles MessageForm.
  */
 public class MessageFormManager {
   private final MessageFormLayout messageFormLayout;
   private SendMessageCallback sendMessageCallback;
 
-  public MessageFormManager(MessageFormLayout messageFormLayout,
-                            MessageFormLayout.ExtraActionSelectionClickListener callback) {
+  public MessageFormManager(MessageFormLayout messageFormLayout, MessageFormLayout.ExtraActionSelectionClickListener callback) {
     this.messageFormLayout = messageFormLayout;
     init(callback);
   }
@@ -24,13 +23,8 @@ public class MessageFormManager {
     this.sendMessageCallback = sendMessageCallback;
   }
 
-  public void clearComposingText() {
-    messageFormLayout.setText("");
-  }
-
   public void onMessageSend() {
     clearComposingText();
-    messageFormLayout.setEnabled(true);
   }
 
   public void setEditMessage(String message) {
@@ -38,12 +32,14 @@ public class MessageFormManager {
     messageFormLayout.setText(message);
   }
 
+  public void clearComposingText() {
+    messageFormLayout.setText("");
+  }
+
   private void sendMessage(String message) {
     if (sendMessageCallback == null) {
       return;
     }
-
-    messageFormLayout.setEnabled(false);
     sendMessageCallback.onSubmitText(message);
   }